A Spring Mills Elementary School teacher was taken to the hospital Tuesday after she unknowingly ate brownies laced with marijuana.

According to a report released today by the Oakland County Sheriff’s Office, deputies were dispatched to the Highland Township school at 8:45 a.m. Wednesday after the 44-year-old teacher, a Highland resident, reported she had tested positive for THC, or tetrahydrocannabinol, the chemical responsible for most of marijuana's psychological effects.

The teacher reportedly told police she’d consumed a brownie from the staff break room about 3:30 p.m. Tuesday. Two other teachers also consumed the brownies and felt ill, the report said, but did not seek medical treatment.

The remaining brownies were recovered from the break room by deputies and taken to the OCSO Forensics Laboratory where they tested positive for THC.

The incident remains under investigation.

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